ASTROSAT CZTI

Data Quality Report

Orbit 41943

Creation date: 2024-06-27T22:34:47.964976
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_099T03_9000005720_41943cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41943cztM0_level2_quad_clean.evt
Size (bytes)386,274,24091,771,200
Size368.4 MB 87.5 MB
Events in quadrant A3,037,134634,850
Events in quadrant B4,505,929550,150
Events in quadrant C2,697,691622,082
Events in quadrant D3,599,371560,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125392
B0176612
C0118602
D0148222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5882110.187011%
B588187114.810406%
C588150.085020%
D58812313.927903%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7195 5883 3 3 0.04% 0.05%
B 7194 5882 813 813 11.30% 13.82%
C 7194 5882 0 0 0.00% 0.00%
D 7194 5882 190 190 2.64% 3.23%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 568507 4345.88 635 620 130.7
A 13 254 8587 60.97 635 620 130.7
A 3 137 7240 50.66 635 620 130.7
B 7 202 1984668 17938.24 566 551 110.6
B 5 255 192082 1731.62 566 551 110.6
B 3 112 53746 480.93 566 551 110.6
C 15 214 244641 1689.64 615 618 144.4
C 0 239 45271 309.18 615 618 144.4
C 3 233 5758 35.59 615 618 144.4
D 13 249 534260 3624.01 609 595 147.3
D 2 249 194368 1315.87 609 595 147.3
D 10 199 136900 925.62 609 595 147.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter